Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions

Radius of an iron is 0.21 cm. If density of iron is 7.8 g/cm3, calculate its mass.

is it an iron rod or what?
i cant tell the answer if u dont metion it is a rod,i will find out if u give the height
but only iron is mentioned there not height.


Volume of iron = 4/3×22/7×0.21 × 0.21 ×0.21
                         ≈ 0.039 cm³

density= mass/volume
           7.8 g/cm³ = mass/0.039 cm³
           7.8 × 0.039  = mass 
            0.3042 g = mass
1 5 1
mark it as brainliest answer if u find it helpful
what is the answer of the following questions? plz answer that whether my answer is right or wrong
plz answer my question
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts